Use a distinct return code for SPI commands with unsupported/invalid length

Some drivers support only a few combinations of read/write length and
return error otherwise. Having a distinct return code for this error
means we can handle it in upper layers.

Corresponding to flashrom svn r653.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>

1 files changed, 5 insertions, 5 deletions

diff --git a/sb600spi.c b/sb600spi.c
index 937550d..865a8c3 100644
--- a/sb600spi.c
+++ b/sb600spi.c
@@ -114,14 +114,14 @@ int sb600_spi_send_command(unsigned int writecnt, unsigned int readcnt,
 
 	if (readcnt > 8) {
 		printf("%s, SB600 SPI controller can not receive %d bytes, "
-		       "which is limited with 8 bytes\n", __func__, readcnt);
-		return 1;
+		       "it is limited to 8 bytes\n", __func__, readcnt);
+		return SPI_INVALID_LENGTH;
 	}
 
 	if (writecnt > 8) {
-		printf("%s, SB600 SPI controller can not sent %d bytes, "
-		       "which is limited with 8 bytes\n", __func__, writecnt);
-		return 1;
+		printf("%s, SB600 SPI controller can not send %d bytes, "
+		       "it is limited to 8 bytes\n", __func__, writecnt);
+		return SPI_INVALID_LENGTH;
 	}
 
 	mmio_writeb(cmd, sb600_spibar + 0);